Form for concrete construction



March '16', 1926. 1,577,429

' H. WELLS FORM FOR CONCRETE CONSTRUCTION Filed Nov. 2, 1925 4 Sheets-Sheet 2 H. WELLS March 16 1926.

FORM FR CONCRETE coN STRUCTION Nov. 2, 1925 March 16 1926.

4 Sheets-Sheet 4 Filed Nov. 2, 1925 latented Mar. 16, 1926.

Unirse :s rar e ran HEWITT VELLS, GF WASHINGTON, DIISTRICT OF COLMIA, .ASSGNORT'EVASHNG- TON" STEELfFORM CGMPANY, 0F`\fAS-.l\IGTOl\I,^DSTRCT OF COLUMBA, A 'CDR'- `ll?ORA'I'IIOll OF THE DISTRCT OF CDLUINIBA. l

FRlV FOR CONCRETE CONSTRUCTION.

Application filed v November To all whom if; 97mg/ concern:

lie it known that l, l-lmvrr'r"Vinnie, a citizen ot the United States, and a resident ot llifashington, District otl Columbia, have 'invented new and useful Improvements iu Forms for. Concrete Constructioiu'o't which the lollowing is a specification.

This invention relates to an improvement in the design and construction ot i'orms for coiicretc walls, floors, columns, beams andv girders. '.llhcselorms .maybercmployed in conjunction with eachother in the erection ot a concrete building whereinthebeams andV columnswould be molded by these .forms and the walls and floor system made up ot these` forms andassociated with the columns and beams inthe erection ot the structure.

rThe increasing cost ot lumber tor concrete forni work, the high cost ot laborin the building and erection, as well 1a`s. the great .waste of material involved, demands some solution of the problem. to which this invention applies.

The invention consists .in employing pressed steel lor hot rolled channel shaped plates of varying widthsandlengths andv having an end ot each` channelV plate compressed or dccr'easedin. depth at one end for. the purpose otv overlapping. or telescop- .ing with adjacent channels in obtaining` the desired length of form.

In assembling the form twowooden rails or strips are providedand interposed between thcse strips area number of channel shaped plates ot different widths to` lproduce a .form of a given width and. to these` plates are connected other, plate-s in overlapping re.- lation to produce the desired length. The rails and. plates are mounted. uponv wooden battens with. the flanged edges of the plates resting upon the battens. The rails .and plates are then. clamped together. and nails are driven through the plates and rails into Ithe battens thereby connecting the rails and plates to the battens and producing a composite form. These Vforms maybe made all ot the .same lengthand width in erecting a wall, licor, panel or column, or some .of them 'may be made ot less .width and ot shorter lengths, to makeallowances for. openings and cleanV out pockets. Also when several ot these 'forms are arranged together to cz st the beams or columns` they may be built up of various widths and lengths 'tor the pur- 2 1925'. -seriai nascente.

pose of making allowances wlhere .beams and columns join and for the purpose ot .reducing the size of structural members trom ione l'loor to another.

The invention consists ot certainother novel features ot construction and combinations .ot' arrangements of partsfwhich will be hereinafter more fully described land pointed out in the claims. l

Figure .l is a view in perspective illustratingan application ot the 'forms iu. the construction .ot columns, beams and :lioorsg Figure. 2 is a ,perspective view .showing the end. ot. a iorm constructed ot two rails andthreeplates connected together by .a hatten;

Figure 3 is an end view showingfour of two overlapping plates ot' aV` modified construction from that shownA inFigure el.

In carrying out this inventionV the forms are constructed ot .pressed steel channel shaped pilates 10 made preferably in lengths oi. three, four, live and six feetand two and six inches. in width. An end of' each plate is compressed Vinwardly of its length tor about twelve inches. as at 11 andthe body or bottom of the plate may be likewise compressed so that when two plates or sections vare telescopedthe flanges 12 ot the plates et the two sections will be parallel throughout their entire length, Figures l and 1l. p

`Figure 6 illustratesl oneolt the channel plates havinga reducedend 11, andan arrangement ot holes 16 at its reducedY end, and holes 17 at the opposite end and near the center or approximately midway ot the plate. These holes 16 and 17 may be variously arranged and ot any number to Vsidesassembled for constructing a column; Y

suit the requirements for the purpose of overlapping the ends of two plates and attaching these plates to the battens 111. The plates may be provided with openings or slots 18 as shown in Figures l and 8. The downwardly extending flanges 12 of the plates are provided with suitable openings or holes 22 for the purpose of attaching the plates to the side rails 13 should oceasion require the fastening of a plate to the side rails.

These plates and side rails 13 are fastened to battens 111 as illustrated in Figures 2 and 9. rllhe battens are preferably four inches wide, but the battons that are employed where the plates overlap are preferably eight inches wide for stiffness and to insure the battens registering with one or more of the holes of the plates so that nails 15 may be diven through the holes and through the battens for fastening the plates at'the overlapped ends to the battens. In instances where the holes 16 and 17 of the overlappingends of the plates do not come into registry due to the length of the form to be constructed a punch is employed to form holes in the underneath plates so that the nails may pass through the plates and into the battens. Instead of a series of closely spaced holes, slots 17 may be employed as illustrated in Figure 8, which would insure registry of the openings of the overlapping ends.

The relation of the plates 10 to each other when assembled in multiple, will bring the flanges 12 in close proximity at the point of overlap and should any open space occur between the plates it will be at the ends of the flanges only as indicated in Figure 10. Vthere the plates'two inches wide on each side of the siX inch wide plates are shown having a different overlap illustrates how different overlaps can be made to obtain a desired length of form. The flanges'12 of several of the assembled and overlapped plates when clamped together are brought in close contact and will have their edges tight and parallel throughout the length of the form. When thus nailed to the battens the form will hold its shape and size.

In making a composite form two side rails 13 are employed. These rails are cut to a length for a particular form to be constructed and interposed between these rails are the metal plates 10, the number of plates employed being governed by the width of form to be produced. As illustrated in Figure 2, a form fourteen inches wide is shown made up of two side rails 13 two inches wide, a metal plate 10, six inches wide and two plates each two inches wide. rFhe side rails 13 and plates 10 are'connected to a batten 1dy by means of nails 15 passing through the rails and battens and through the several plates and battens. rlhe nails are preferably clenched on the outer side of the battens 14 for securely holding the rails and plates in position. It is to be noted that the flanges 12 are in contact with the battons 14 so that the bat'tens form a support for the plates and resist any pressure exerted upon the plates which would force them out of position.

In Figure 9 an end View is shown of a twenty inch wide form composed of the side rails 13 and live two inch plates and one, sir; inch plate. rlhis arrangement may be varied and instead of three of the two inch plates a sin' inch wide plate could be substituted.

In making up a form of nine to ten feet in length, the form could be made from plates tive feet in length having overlapping ends of twelve inches by selecting two, live feet length plates or a six foot plate and a four foot plate could be used and overlapping them the required number of inches to suit the length of form desired.

In constructing a square column form, the four sides would be assembled as illustrated in Figure As shown the upper and lower forms would be twenty-two inches wide and the remaining two sides would be twenty inches wide while the battons for each form would be twenty-two inches in length. Therefore, in constructing a column say twenty inches square the upper and lower forms might be composed of side rails 13 and two, six inch wide plates 10, and three, two inch wide plates; while the remaining two sides would be made up of side rails and two, si'X inch wide plates and two, two inch wide plates. lWhen assembled the side forms would be interposed between the upper and lower forms as shown in Figure 3; bringing the rails of the adjacent sections together and fastening them by nails 19.

In the construction of a beam form a similar method is employed as described for columns. The two sides .and bottom forms are made as shown in Figure 1.

In reinforced concrete building construction the size of the supporting columns are ordinarily reduced as the floors approach the roof. In such instances it is possible to alter the same forms used on one floor for use on another loor above and without entirely reconstructing the forms or buildingl additional forms for each floor. This is accomplished by taking olf one of the side rails and removing one or more of the plates 10 from the form, and then replacing 'the side rail to the hatten. The projecting ends of the battens may then be cut off.

In constructing a column it is often desirable to provide pockets or openings at the bottom of the column box for the purpose of cleaning out the base of the column before the concrete is poured. To provide for this opening at the base two of the plates `may bev given a greater overlap than those adjacent, so that they would not extend: the iull length of the column side. AAfter cleaning out the column thisopening-maythen be closed by-insertlng apiece Oliwood and securing it to an adjacent plate or plates by means ot nails passing through the openings 22 ot the flanges l2. These openings may also be provided -at-the lop of the column storms where the y beam `forms l'rame into the column.

Figure l illustratesfanarrangement that may be employed in the use ofthese -lorms in building a column A '.and'bean'is B and slab forms C. ln this method the slab forms C would be supported 'at Vits ends `upon wooden strips 23 nailed over the battens attached to the exterior sarl-'ace vot the forms comprising oneot the sidesfof the beams B. The o\i'erlapped ends ot the plates l0 ot the form ior the floor would besupported by a transverse -joist 2l. The metal plates l() would therefore be lfastenedl to tliestrips 23 and joistQlA by nails l5 passing through the plates and into the strip 23 and joist Qttor'holding theft'orms in place. These forms or plates l0 would.l bc additionally supported between the strips V23 and joist 2l by diagonal braces 2o. "llo remove the slab :lormsfrom position after the concrete is poured strips 2S are taken oli' and joist and braces knocked out and the slab plates'l() comprising the torni taken down in turn.

It willbe evident from the foregoing that these forms may `be variously employed in concrete construction work and the like as they may be made ot various widths and lengths to suit the specific requiren'ients ot the work.

In assembling the forms of the same or a series ot' plates of ditl'lerent widths a 'form may be made of any width required by simply supplying a suiiicient number ot plates to produce the width of a form desired; and then by adding to these additional plates and overlapping the ends thereof a form may be constructed practically any length required; as the amount oit overlap between the adjoining plates would be governed by the length of form needed.

In Figure ll a modified construction is shown ot the overlapping and telescoping ends of two plates 10. This construction is similar to that shown in Figure l but the bottom or tace ot the plates l() is not compressed and only the sides are compressed sufficiently to premit of the ends entering between the lianges 12 of an adjoining plate.

Having described my invention what I claim as new and desire to secure by Letters Patent is: n

l. A lorm igor concrete construction comprising a. metal plate having Aits sides bent downwardly, said plate having the sides thereof at one end extending inwardly for reducing the width ot theplate to-permit overlapping of the plate with the next "ad-r jacentplate.

2. Aform for concrete construction comprising a plate having itssides bentdown wardly, said plate having the body and sides thereof compressed inwardly tor reducing the`v widthV otV the'plate to permit overlapping` ot the' plate with theV next. adjacent plate.

3. A form Stor concrete construction comprising a number ot pressed ysteel channel shaped plates, battens extendingl transversely of the severa-l plates, and means passing through thefplates and battens for'lastenJ ing the plates tof the battens and# producing a eomposite'form.

4l. A form. for concrete construction comprising two sets of plates each set consisting of a number of channel shaped plates, the ends of the.v plates of one set overlapping the plates ot the adjoining set tor producing an extensible joint, attaching `means extending across the several plates at their `overla-pped endsyand means passing through the plates, and attaching ymeans ftor connecting them together.

5. A lorm for concrete construction comprising a number olk channel shaped plates 0l multiple widths, siderails engaging the outermost plates, and `battens connectedy to the side `rails for joining the several plates together to produce a composite form.

6. A form for concrete construction com prising ak number ofchannel shaped plates of different widths, side rails engaging the outermost plates, and battens connected to the side rails tor joining the several plates together to produce a composite form.

7. A form for concrete construction comprising a number of channel shaped plates, side rails engaging the outermost plates, and battens connected to the side rails and plates for joining the several plates together to produce a composite fori v S. A form for concrete construction comprising sets ot plates, each set consisting of a number of plates of multiple Widths, an end of thevplates of each set being inwardly compressed and telescoping the ends of the adjoining set of plates, side rails engaging the outermost plates of the several sets of plates, battens connected to the side rails for joining the several platesot each set together, and means for connecting the plates to the battens.

9. A form for concrete construction comprising sets of plates, each set consistingot a number of channel shaped plates of multiple widths, an end of the plates of each set being inwardly compressed and telescoping the ends ot the adjacent set of plates whereby the sides of the adjoining plates Will have continuous contact throughout their length, and battens connected to the plates for joining the several plates of each set together.

10. A form for concrete construction comprising sets ot plates, each set consisting ot a number of channel shaped plates of n'iultiple widths, an end of the plates of one set being inwardly compressed and telescoping the ends ot the adjoining set ot plates, side rails engaging the outermost plates olf the several sets ot plates, and battens connected to the side rails for joining the several plates oilI each set together.

ll. A, form l'or concrete construe-tion comprising sets oi plates, each set consisting ot a nnmlier olf channel shaped plates of' nmltiple Widths, an end of the plates each set being inWardlj,7 compressed and teleseoping the ends oli the adjoining set et' plates. side rails engaging the outermost plates of the several sets ot plates, battens connected to the side rails tor joining the several plates ot each set together, said plates being provided with openings therethrough, said battent; being located in alinement with the openings therein, and means passingl through the holes o' the plates and into the battens for fastening the plates to the battens.

12. A iform for concrete eonstruetion comprising sets of plates, each set consisting of a number of plates of multiple widths, an end of the plates of each set overlapping the plates of the adjoining set for producing an extensible joint, saidplates being provided With openings, and the openings at the overlapped ends of the plates adapted to be brought into registry, battens arranged over the openings of the plates at the overlapped ends, and means passing through the openings in the plates and engaging the battens tor :fastening the plates to the battens.

13. A form tor concrete construction comprising sets ot plates, each set consisting ot a number of plates of multiple widths, an end ol' the plates of each set overlapping the plates of adjoining set for adjusting the length of the form, side rails engaging the outermost plates ot the several sets oi plates.` and battons connected to the side rails and plates for joining the several plates ot each set ot' platestogether to produce a eoniposite form.

lll. A form for casting concrete columns comprising a number of forms assenibled to produce a column mold,l each form consisting of a number of channel shaped plates, side rails engaging the outermost plates, and battens Connected to the side rails for joining the several plates together to produce a composite form.

l5. A "form for concrete construction coinprising sets of plates, each set consisting of a number of channel shaped plates the ends of the plates of one set overlapping the plates of the adjoining set for producing an extensible joint, and battens extending across the several plates for connecting them together.

HEVVITT WELLS. 

